Re: Samsung monitor Installed 1 cap wrong, now menu button dead, "no signal detected"
Thank you for your reply, momaka!
I'm confused about what the problem is.......but I don't think it's my cap replacement.
I can get a very poor quality VGA pic.
While the VGA cable/signal is input, the menu buttons on the monitor work
But no DVI signal recognition at all.
And menu buttons don't work when DVI is plugged in.
I've used other monitors, and the DVI signal is good with other monitors.....
When the DVI is...
glutton4punishment
Senior Member
Last Activity: 03-20-2023, 04:39 PM
Joined: 05-02-2013
Location: Bethesda
-
Samsung monitor Installed 1 cap wrong, now menu button dead, "no signal detected" msg
Samsung synchmaster 226BW.
Before I replaced 5 caps, the screen was dim.
Sometimes it wouldn't turn on.
I opened it up, and found 4 bad caps in the pwr supply section.
I unfortunately installee one backwards, i.e. wrong polarity.
When I turned it on, I head a loud pop, and I quickly shut it off.
The replaced caps are 3 860uF 25V's, and 1 330u 35V.
One of the 860uF blew.
I didn't have another 860uF at home, so I tried it with a 1000uF 35V cap (I remember the reading of the 1k uF cap was close... -
Re: Static/Snow Picture on Hitachi Plasma P50X102A
Thanks again, RJ, I'll do as you said.Leave a comment:
-
Re: Static/Snow Picture on Hitachi Plasma P50X102A
yeah, I'm sure it's the flex cable seating.
any other ideas about the purple and purple banding?
Or why the menu screen looks good?Leave a comment:
-
Re: Static/Snow Picture on Hitachi Plasma P50X102A
I put back in the power supply board and took pics of the screen with input from a laptop.
[I](Before I get to the pics, I pulled the caps from the Y-sus board that had shrunken labels on them. The values were within specs, but the ESR's read around 0.5.)
[/I]
I guess I want to make a couple of comments about picture quality that may give you guys clues.
1. There seems to be a burn in at the top right and left corners, and towards the bottom in the middle. Once we get the big picture fixed,...Leave a comment:
-
Re: Static/Snow Picture on Hitachi Plasma P50X102A
Thanks for putting in the effort, RJ!!
But yeah, I'm sure that's the correct model #. Nothing on any of the boards or stickers on the frame gives any indication of being manufactured by somebody else.
I went through some the power supply board, and although the ESR's of the caps seem to be high, I'm not sure where the problem is.
WOW! I guess I have A.D.D.! Your comment about the caps with the "missing half of the shrink wrap label" went right by, and it didn't...Leave a comment:
-
Re: Static/Snow Picture on Hitachi Plasma P50X102A
thanks, RJ!
To help me hunt down the fuses on the Y&Z boards, am I correct that they will be marked with an "F" on the circuit board?
I have 2 DVMs, a newish one, a Vichy VC97, and an old Radio Shack (I lost my analogue VM). I pretty much use only the Vichy nowadays....Leave a comment:
-
Re: Static/Snow Picture on Hitachi Plasma P50X102A
Thanks RJ, but it's just black magic marker marks...Leave a comment:
-
Re: Static/Snow Picture on Hitachi Plasma P50X102A
bumpLeave a comment:
-
Re: Static/Snow Picture on Hitachi Plasma P50X102A
some pics...Leave a comment:
-
Static/Snow Picture on Hitachi Plasma P50X102A
Hi!
I'm trying to fix this TV (duh!), thanks for your help!
The image has an overall white cast to it with purple and green areas of hue, and lots of snow when there's no input. With input, the image looks like a blend of the image and the the white/green/purple/snow background.
The menus and error message ("no input signal") appears on the screen very clear without problems. The menu and error message appear in a navy blue box with yellow letters, or a black box with yellow letters and a red exclamation point.
[B]All caps/components... -
Re: Measuring ESR using cheap multitester
It actually does a bunch of stuff automatically!
So I'm going to move forward and keep testing.
...
Leave a comment:
-
Measuring ESR using cheap multitester
Hi,
I'm trying to fix a Hitachi plasma TV.
I bought this in order to help fix a lot of things........
Does anybody think that this wouldn't do a good jb of measuring ESR's?
TIA
It's listed on ebay as LCR-T4 Digital Transistor Tester
P.S., as far as I can tell, ESR of 0.3 = bad cap, correct? The ESR value that I think it should be for a 680uF, 100V cap should be 0.1....Last edited by glutton4punishment; 03-03-2020, 05:55 AM. -
Re: newbie needs help w/Electrolytic caps (washing machine)
...
Leave a comment:
-
Re: newbie needs help w/Electrolytic caps (washing machine)
After putting in the new triac, I still got the same error code, motor problems.
I went back over all my work and retested the motor. It tested fine. But this time I started from the beginning, reading the motor resistances from the connection at the front of the machine, where it plugs into the front panel.
There was a problem, inifinite resistance with one of the wires. So I go back to the motor, pull of the wire loom connector to the motor. The motor read fine.
So I start...Leave a comment:
-
Re: newbie needs help w/Electrolytic caps (washing machine)
I don't know what you mean here........Leave a comment:
-
Re: newbie needs help w/Electrolytic caps (washing machine)
BTB16
The store had a BTA16, which they said was interchangeable...Leave a comment:
-
Re: newbie needs help w/Electrolytic caps (washing machine)
OK, I took out the large transistor, which I didn't know if it was a transistor, a triac, a mosfet, or whatever else looks like that.
It tested bad, so I bought a new one.
I'll report the results laterLeave a comment:
-
Re: newbie needs help w/Electrolytic caps (washing machine)
[B][I]done[/I][/B]Re: newbie needs help w/Electrolytic caps (washing machine)
[B][I]done[/I][/B]...Leave a comment:
-
Re: newbie needs help w/Electrolytic caps (washing machine)
merci!...Leave a comment:
No activity results to display
Leave a comment: